code: def forward(self):
      x = chainer.Variable(self.x)
      return functions.relu(x)
  
file_path: chainer/tests/chainer_tests/functions_tests/activation_tests/test_relu.py
imports: import unittest
  import numpy
  import chainer
  from chainer.backends import cuda
  from chainer import functions
  from chainer import testing
  from chainer.testing import attr
label_desc: Use image node_id 2 for calling the TestReLUCudnnCall obj's underlying member method code with example usage: obj.forward() and returns: functions